Cable positioning method based on weak magnetic detection technology

A positioning method and magnetic detection technology, applied in the direction of the size/direction of the magnetic field, electric/magnetic exploration, magnetic field measurement using the principle of magnetic flux control, etc., can solve the problems of low identification ability and large influence, and achieve anti-interference The effects of strong ability, reduced impact, and expanded scope of use

Active Publication Date: 2020-01-17
JIANGSU FRONTIER ELECTRIC TECH +1
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Problems solved by technology

[0007] Aiming at the problem that the traditional cable positioning method has low identification ability and is greatly affected by external situations, the purpose of the invention is to provide a method with higher accuracy and which can be applied to the positioning of underground cables and submarine cables using weak magnetic detection. A method for locating underground cables and submarine cables, which has better anti-interference ability and can perform high-resolution positioning

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  • Cable positioning method based on weak magnetic detection technology
  • Cable positioning method based on weak magnetic detection technology
  • Cable positioning method based on weak magnetic detection technology

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0034] see figure 1 , the present invention is based on the cable positioning device of weak magnetic detection technology, comprises fluxgate sensor 1, data line, power supply line, measurement system power supply, data acquisition card and computer; Fluxgate sensor 1 is connected measurement system power supply by power line, through The data line is connected to the data acquisition card, and the data acquisition card is connected to the computer.

[0035] Among them, the fluxgate sensor is used to collect magnetic field information. After the fluxgate sensor detects the magnetic field information, it converts the magnetic field intensity into voltage amplitude in equal proportion, and...

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Abstract

The invention discloses a cable positioning method based on weak magnetic detection technology. The method comprises the following steps: moving a fluxgate sensor horizontally above an area to be tested along a broken line; determining a starting point of a detector; determining a specific position and distribution of a cable; performing a processing process of magnetic field data; decomposing a total magnetic field component into three sub-magnetic fields; obtaining time-varying change waveforms of three magnetic field components; judging the position of the cable according to the wave troughs and peaks of the waveforms; and selecting the sampling frequency. The method has the advantages of high anti-jamming capability, capability of performing high-identification positioning, high sensitivity and simple operation. The method can be applied to AC cables and DC cables.

Description

technical field [0001] The invention belongs to a positioning method for underground cables and submarine cables, in particular to a cable positioning method for the detection technology of a weak magnetic field vector of a cable. Background technique [0002] With the rapid development of the national economy, the urban underground power grid is becoming more and more complex, and the location of some underground cables cannot be determined. In addition, submarine cables are easily covered by underwater organisms and silt, so it is difficult to find them directly with the naked eye. At present, the common cable positioning methods include reflected wave method, audio frequency method and steady field method. [0003] The disadvantages of the reflected wave method are: (1) the type of metal object cannot be accurately judged, and it is easy to be misjudged by other metal objects; (2) due to the large attenuation of high-frequency electromagnetic waves in seawater, this meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/08G01R33/04
CPCG01R33/04G01V3/081
Inventor 黄烜城王威李海鹏吕泽鹏吴锴孟永鹏袁超封建宝储海军
Owner JIANGSU FRONTIER ELECTRIC TECH
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